Device and method for automatically winding and unwinding aircraft cable

Abstract

The invention provides a device for automatically taking up and paying off an aircraft cable. The device comprises a supporting base; the bobbin is arranged on the supporting seat; the stepping motor is arranged on the supporting seat, and the stepping motor is connected with the bobbin; the motor control part is connected with the stepping motor, and the motor control part is used for driving the stepping motor to rotate based on the first acceleration or the second acceleration so as to take up and pay off the aircraft cable; meanwhile, the invention further provides a method for automatically winding and unwinding the aircraft cable. The problem that manual operation of aircraft cable blanking take-up and pay-off is time-consuming and labor-consuming is solved, and meanwhile, through the automatic take-up and pay-off device, the possibility that due to the fact that the strength of manual take-up and pay-off is not easy to control, quality risks are caused to cable harnesses is avoided.

Description

Technical Field

[0001] The present application belongs to the field of aviation cable electrical manufacturing technology, and in particular, relates to a device and method for automatically retracting and releasing aircraft cables. Background Art

[0002] At present, aircraft cable retracting and releasing devices are mostly implemented by manual operation, as follows:

[0003] The aircraft cable unloading and retracting device (≤ ANSI No. 10) consists of a base and a shaft that can pass through the cable bundle. When using the cable, it is pulled by manpower to achieve the purpose of wire release. If the required cable is relatively long, the worker's pace will therefore speed up. After reaching the required length, the worker stops, but the cable bundle continues to rotate and release the wire by inertia, resulting in too much wire being clamped between the spool and the base, which may damage the cable skin; after the wire is released, the current storage of the cable also relies on manual rotation of the spool to achieve the purpose of wire retraction. This method is not only time-consuming and labor-intensive, but also has quality risks. Summary of the invention

[0004] Purpose of the invention: To solve the time-consuming and laborious manual operation of aircraft cable unloading and retracting, and at the same time, through the automatic retracting and releasing device, to avoid the possibility of quality risks to the cable harness due to poor control of the force caused by manual retracting and releasing, and to ensure the convenience, safety and reliability of the cable unloading operation to a great extent.

[0005] In a first aspect, the present application provides a device for automatically retracting and releasing aircraft cables, the device comprising:

[0006] Support seat;

[0007] A bobbin, arranged on the support seat;

[0008] A stepper motor is arranged on the support seat, and the stepper motor is connected to the bobbin;

[0009] The motor control part is connected to the stepper motor, and is used to drive the stepper motor to rotate based on the first acceleration or the second acceleration to retract and release the aircraft cable.

[0010] Preferably, the device further comprises:

[0011] A base, used to set the support seat, wherein the base has a cavity;

[0012] A battery is disposed in the cavity, and the battery is connected to the motor control part;

[0013] The anti-misinsertion DC charging interface is arranged on one side of the base, and the anti-misinsertion DC charging interface is connected to the battery.

[0014] Preferably, the device further comprises:

[0015] A rotating drum is arranged on the spool, and the rotating disks on both sides of the rotating drum are provided with recesses; wherein the rotating drum is wound with aircraft cables;

[0016] A locking mechanism is arranged on the bobbin, and a protrusion is arranged on the locking mechanism, and the protrusion matches the recess; wherein the locking mechanism can lock the rotating drum and the bobbin together.

[0017] Preferably, the motor control part comprises:

[0018] A Hall-type rotation speed sensor is arranged on the support seat, and the Hall-type rotation speed sensor is used to measure the rotation speed of the bobbin;

[0019] A direction sensor is arranged on the support seat, and the direction sensor is used to measure the rotation direction of the spool;

[0020] A single-chip microcomputer control circuit board is connected to the Hall-type speed sensor and the direction sensor;

[0021] A DC motor driver is connected to the single-chip microcomputer control circuit board, and the DC motor driver is used to drive the stepper motor.

[0022] In a second aspect, the present application also provides a method for automatically placing aircraft cables, the method comprising:

[0023] Step 1: Pull the aircraft cable, the spool starts to rotate, a Hall-type speed sensor measures the speed of the spool to obtain a first speed, and a direction sensor measures the rotation direction of the spool to obtain a first direction;

[0024] Step 2, determining a first acceleration based on the time of automatically placing the aircraft cable, the first rotation speed, the second rotation speed and the length of the aircraft cable to be placed; wherein the second rotation speed is 0;

[0025] Step 3: The stepper motor drives the spool to rotate based on the first acceleration and the first direction to start releasing the aircraft cable.

[0026] Preferably, the first rotational speed is a starting rotational speed of the spool, and the second rotational speed is a stopping rotational speed of the spool.

[0027] In a third aspect, the present application also provides a method for automatically collecting aircraft cables, the method comprising:

[0028] Step 1, rotating the drum, the bobbin starts to rotate, the Hall-type speed sensor measures the speed of the bobbin to obtain a second speed, and the direction sensor measures the rotation direction of the bobbin to obtain a second direction;

[0029] Step 2, determining a second acceleration based on the time of automatically placing the aircraft cable, the second rotation speed, the third rotation speed and the length of the aircraft cable to be placed; wherein the third rotation speed is 0;

[0030] Step 3: The stepper motor drives the spool to rotate based on the second acceleration and the second direction to start retracting the aircraft cable.

[0031] Preferably, the second rotational speed is the starting rotational speed of the spool, and the third rotational speed is the stopping rotational speed of the spool; and the second direction is opposite to the first direction.

[0032] Beneficial technical effects of this application:

[0033] Compared with the traditional aircraft cable feeding device, this application mainly improves the original cable feeding device to automate the retraction and release of the cable. While retaining its characteristics of simple structure, light weight, and easy movement, it adds an automatic retraction and release function. In practical applications, it can greatly improve production efficiency and has a certain preventive effect on reducing man-made quality accidents such as cable insulation wear. BRIEF DESCRIPTION OF THE DRAWINGS

[0034] Figure 1 It is a structural schematic diagram of a device for automatically retracting and releasing aircraft cables provided in an embodiment of the present application;

[0035] Figure 2 is a side view of a device for automatically retracting and releasing aircraft cables provided in an embodiment of the present application;

[0036] Figure 3 is a graph of the relationship between speed and time provided in an embodiment of the present application;

[0037] Among them, 1-Hall type speed sensor; 2-direction sensor; 3-locking mechanism; 4-stepping motor; 5-charging port; 6-base; 7-support base; 8-spool; 10-single chip control circuit board; 11-DC motor driver. DETAILED DESCRIPTION

[0038] See also Figure 1 and Figure 2 In this application, the original cable retracting and releasing device is divided into two parts: a mechanical fixing part and a motor control part.

[0039] Among them, the mechanical fixing part is composed of: on the basis of the support seat 7, a 24V rechargeable battery 6 is placed inside the base as a power supply, and charged through an anti-misinsertion charging port 5, the locking mechanism 3 connecting the bobbin 8 is locked and driven by a stepper motor 4, as follows.

[0040] Among them, a DC charging interface 5 is provided on the base 6 to prevent mis-insertion, and the battery is placed inside the base for power supply. The base can protect the battery; the support seat 7 plays an overall supporting role and is used to fix the motor 4 and the spool 8; the stepper motor 4 is responsible for collecting the direction and magnitude of the force and the power output magnitude and duration; the locking mechanism 3 is a device that can automatically bulge, and can flexibly adjust the locking corresponding to the recessed part of the spool according to the conditions of the outer wall of the different spools; the spool 8 is a ≤ American Standard No. 10 cable commonly used in production, in which the motor 4 and the locking device 3 are connected to the motor drive shaft on the same axis.

[0041] Among them, the motor control part is composed of 1 Hall-type speed sensor, 2 direction sensors, 10 single-chip control circuit board, 11 DC motor driver, 4 stepper motors (with 0-speed automatic braking and power-off brake locking functions). The driving principle is as follows:

[0042] When the spool 8 is locked, the wire is pulled to give the spool a starting force. The Hall-type speed sensor 1 starts to measure the speed of the spool at this time. At the same time, the direction sensor 2 collects the rotation direction of the spool and outputs an analog signal to the control circuit of the single-chip control circuit board 10. The single-chip control circuit converts the collected data into digital quantity and outputs it to the DC motor driver 11. The DC motor driver 11 outputs the speed and direction signals to the stepper motor 4 through pulse width modulation PWM, so that the motor starts to slide in the direction of the cable force - braking action (only stop, not lock); on the contrary, when the cable releases excess cable, it is automatically recovered. You only need to give the spool a force in the winding direction by hand, and the DC motor driver 11 continues to perform the above action.

[0043] When the whole device is powered off, the stepper motor 4 automatically brakes and locks to prevent the spool from uncontrolled movement due to power failure. After the device is powered on, the self-check is correct, and the stepper motor 4 automatically unlocks and stops, waiting for the action signal input (see Table 1 below for the driver signal logic)

[0044] Table 1

[0045]

[0046] Among them, PWM1: forward pulse signal input; PWM2: reverse pulse signal input; EN: motor enable; X: no signal input.

[0047] This device uses a stepper motor to achieve the function of retracting and releasing the wire. When the spool is locked by the locking mechanism, when the cable is needed, you only need to pull it lightly. The stepper motor will detect the direction and value of the pulling force. The motor will automatically match the corresponding speed according to the direction and force value, and the speed is adjusted in real time according to the real-time force value. When the cable is unloaded and the excess cable needs to be retracted, you only need to turn it gently in the retraction direction with your hand. At this time, the motor will rotate in the default direction for 20 seconds.

[0048] Compared with the traditional aircraft cable feeding device, this application mainly improves the original cable feeding device to automate the retraction and release of the cable. While retaining its characteristics of simple structure, light weight, and easy movement, it adds an automatic retraction and release function. In practical applications, it can greatly improve production efficiency and has a certain preventive effect on reducing man-made quality accidents such as cable insulation wear.

[0049] In other embodiments of the present application, the application is further described in detail:

[0050] By installing the No. 8 spool rotating device on the No. 6 base which is powered by the No. 5 charging port, the electric function of the aircraft cable unloading device is realized. At the same time, the No. 3 locking mechanism is set on the rotating shaft of the No. 8 spool rotating device to realize the locking function of the cable pulling and ensure that the cable of a certain length can be automatically locked during the operation to prevent it from being recovered and loosened. In addition, the No. 5 stepper motor (with a 24V rechargeable battery inside) is set on the left side of the rotating shaft of the No. 8 spool rotating device to cooperate with the No. 5 rechargeable base to realize the automatic control of the spool rotation and collection.

[0051] The present application provides an aircraft cable unloading device that can be automatically retracted and released, and the unloading device includes: a locking mechanism, which is arranged on the shaft of the connecting spool; a stepper motor, which is arranged on the outside of the shaft of the connecting spool to provide drive; an anti-misinsertion charging interface, which is arranged on the base of the device; and a 24V rechargeable battery, which is arranged on the base of the device to power the stepper motor. The present application provides an aircraft cable unloading device that can be automatically retracted and released, which can continuously assist in retracting and releasing the cable during the cable unloading process, thereby greatly improving the efficiency of the unloading work, and has the characteristics of simple structure, easy disassembly, light weight, easy movement, high reliability, and low maintenance cost.

[0052] In other embodiments of the present application, the present application further provides a method for automatically placing aircraft cables, the method comprising:

[0053] Calculate the acceleration and deceleration by T-type formula: T = (Vf-Vi) / a, please refer to Figure 3 .

[0054] Where T represents the acceleration / deceleration time, Vf represents the final speed, Vi represents the initial speed, and a represents the acceleration or deceleration.

[0055] Step 1: Pull the aircraft cable, the spool starts to rotate, a Hall-type speed sensor measures the speed of the spool to obtain a first speed, and a direction sensor measures the rotation direction of the spool to obtain a first direction;

[0056] Step 2, determining a first acceleration based on the time of automatically placing the aircraft cable, the first rotation speed, the second rotation speed and the length of the aircraft cable to be placed; wherein the second rotation speed is 0;

[0057] Step 3: The stepper motor drives the spool to rotate based on the first acceleration and the first direction to start releasing the aircraft cable.

Claims

1. A device for automatically retracting and releasing aircraft cables, characterized in that: The device comprises: Support seat; A bobbin, arranged on the support seat; A stepper motor is arranged on the support seat, and the stepper motor is connected to the bobbin; The motor control part is connected to the stepper motor, and is used to drive the stepper motor to rotate based on the first acceleration or the second acceleration to retract and release the aircraft cable.

2. The device according to claim 1, characterized in that The device also includes: A base, used to set the support seat, wherein the base has a cavity; A battery is disposed in the cavity, and the battery is connected to the motor control part; The anti-misinsertion DC charging interface is arranged on one side of the base, and the anti-misinsertion DC charging interface is connected to the battery.

3. The device according to claim 1, characterized in that The device also includes: A rotating drum is arranged on the spool, and the rotating disks on both sides of the rotating drum are provided with recesses; wherein the rotating drum is wound with aircraft cables; A locking mechanism is arranged on the bobbin, and a protrusion is arranged on the locking mechanism, and the protrusion matches the recess; wherein the locking mechanism can lock the rotating drum and the bobbin together.

4. The device according to claim 1, characterized in that The motor control part includes: A Hall-type rotation speed sensor is arranged on the support seat, and the Hall-type rotation speed sensor is used to measure the rotation speed of the bobbin; A direction sensor is arranged on the support seat, and the direction sensor is used to measure the rotation direction of the spool; A single-chip microcomputer control circuit board is connected to the Hall-type speed sensor and the direction sensor; A DC motor driver is connected to the single-chip microcomputer control circuit board, and the DC motor driver is used to drive the stepper motor.

5. A method for automatically placing aircraft cables, characterized in that: The method comprises: Step 1: Pull the aircraft cable, the spool starts to rotate, a Hall-type speed sensor measures the rotation speed of the spool to obtain a first rotation speed, and a direction sensor measures the rotation direction of the spool to obtain a first direction; Step 2, determining a first acceleration based on the time of automatically placing the aircraft cable, the first rotation speed, the second rotation speed and the length of the aircraft cable to be placed; wherein the second rotation speed is 0; Step 3: The stepper motor drives the spool to rotate based on the first acceleration and the first direction to start releasing the aircraft cable.

6. The method according to claim 5, characterized in that The first rotation speed is the starting rotation speed of the spool, and the second rotation speed is the stopping rotation speed of the spool.

7. A method for automatically collecting aircraft cables, characterized in that: The method comprises: Step 1, rotating the drum, the bobbin starts to rotate, the Hall-type speed sensor measures the speed of the bobbin to obtain a second speed, and the direction sensor measures the rotation direction of the bobbin to obtain a second direction; Step 2, determining a second acceleration based on the time of automatically placing the aircraft cable, the second rotation speed, the third rotation speed and the length of the aircraft cable to be placed; wherein the third rotation speed is 0; Step 3: The stepper motor drives the spool to rotate based on the second acceleration and the second direction to start retracting the aircraft cable.

8. The method according to claim 7, characterized in that The second rotation speed is the starting rotation speed of the spool, and the third rotation speed is the stopping rotation speed of the spool; the second direction is opposite to the first direction.

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